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Stable dark matter particles may arise as pseudo-Goldstone bosons from the confinement of dark quarks interacting via a non-Abelian gauge force. Their relic abundance is determined not by annihilations into visible particles but by dark pion number-c
Externí odkaz:
http://arxiv.org/abs/2311.17157
Akademický článek
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Publikováno v:
JHEP 02 (2023) 008
We study the dilution of dark matter (DM) relic density caused by the electroweak first-order phase transition (FOPT) in the singlet extension models, including the singlet extension of the standard model (xSM), of the two-Higgs-doublet model (2HDM+S
Externí odkaz:
http://arxiv.org/abs/2207.14519
Publikováno v:
Phys. Rev. D.104.083024 (2021)
In this article, we show that in the usual type-I seesaw framework, augmented solely by a neutrino portal interaction, the dark matter (DM) relic density can be created through freeze-in in a manner fully determined by the seesaw interactions and the
Externí odkaz:
http://arxiv.org/abs/2104.00042
Publikováno v:
Phys. Rev. D 102, 023035 (2020)
Thermal freeze-out is a prominent example of dark matter (DM) production mechanism in the early Universe that can yield the correct relic density of stable weakly interacting massive particles (WIMPs). At the other end of the mass scale, many popular
Externí odkaz:
http://arxiv.org/abs/2006.01149
Autor:
Maldonado, Carlos, Unwin, James
If the early universe is dominated by an energy density which evolves other than radiation-like the normal Hubble-temperature relation $H\propto T^2$ is broken and dark matter relic density calculations in this era can be significantly different. We
Externí odkaz:
http://arxiv.org/abs/1902.10746
Right-handed neutrinos with MeV to GeV mass are very promising candidates for dark matter (DM). Not only can they solve the missing satellite puzzle, the cusp-core problem of inner DM density profiles, and the too-big-to fail problem, {\it i.e.} that
Externí odkaz:
http://arxiv.org/abs/1908.09882
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 2, Pp 1-24 (2023)
Abstract We study the dilution of dark matter (DM) relic density caused by the electroweak first-order phase transition (FOPT) in the singlet extension models, including the singlet extension of the standard model (xSM), of the two-Higgs-doublet mode
Externí odkaz:
https://doaj.org/article/ef0473eac93c46798fe46a357dd1b8d6
The identity of Dark Matter (DM) is one of the most captivating topics in particle physics today. The R-parity conserving Minimal Supersymmetric Standard Model (MSSM), which naturally provides a DM candidate in the form of the lightest neutralino ($\
Externí odkaz:
http://arxiv.org/abs/1801.03966
Kinetic decoupling of dark matter typically happens much later than chemical freeze-out. In fact, local thermal equilibrium is an important assumption for the usual relic density calculations based on solving the Boltzmann equation (for its 0-th mome
Externí odkaz:
http://arxiv.org/abs/1805.00526